<template>
  <div>
    <el-form ref="form" label-width="80px">
      <el-form-item label="SPU名称">{{spu.spuName}}</el-form-item>
      <el-form-item label="SKU名称">
        <el-input placeholder="sku名称" v-model="skuInfo.skuName"></el-input>
      </el-form-item>
      <el-form-item label="价格(元)">
        <el-input placeholder="价格(元)" type="number" v-model="skuInfo.price"></el-input>
      </el-form-item>
      <el-form-item label="重量(千克)">
        <el-input placeholder="重量(千克)" v-model="skuInfo.weight"></el-input>
      </el-form-item>
      <el-form-item label="规格描述">
        <el-input type="textarea" rows="4" placeholder="规格描述" v-model="skuInfo.skuDesc"></el-input>
      </el-form-item>
      <el-form-item label="平台属性">
        <el-form ref="from" :inline="true" label-width="80px">
          <el-form-item :label="attr.attrName" v-for="attr in attrInfoList" :key="attr.id">
            <el-select placeholder="请选择" v-model="attr.attrIdAndValueId">
              <el-option :label="attrValue.valueName" :value="`${attr.id}:${attrValue.id}`" v-for="attrValue in attr.attrValueList" :key="attrValue.id"></el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </el-form-item>
            <el-form-item label="销售属性">
        <el-form ref="from" :inline="true" label-width="80px">
          <el-form-item :label="saleAttr.saleAttrName" v-for="saleAttr in spuSaleAttrList" :key="saleAttr.id">
            <el-select placeholder="请选择" v-model="saleAttr.attrIdAndValueId">
              <el-option :label="saleAttrValue.saleAttrValueName" :value="`${saleAttr.id}:${saleAttrValue.id}`" v-for="saleAttrValue in saleAttr.spuSaleAttrValueList" :key="saleAttrValue.id"></el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </el-form-item>
        <el-form-item label="图片列表">
          <el-table style="width: 100%" border :data="spuImgList" @selection-change="handleSelectionChange">
            <el-table-column type="selection" prop="prop" width="80"></el-table-column>
            <el-table-column prop="prop" label="图片" width="width">
              <template slot-scope="{row}">
                <img :src="row.imgUrl" width="100px">
              </template>
            </el-table-column>
            <el-table-column prop="imgName" label="名称" width="width"></el-table-column>
            <el-table-column prop="prop" label="操作" width="width">
              <template slot-scope="{row}">
                <el-button type="primary" v-if="row.isDefault==0" @click="changeDefault(row)">设置默认</el-button>
                <el-button v-else>默认</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="save">保存</el-button>
          <el-button @click="cancel">取消</el-button>
        </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  name: "SkuFrom",
  data() {
    return {
      // 存储图片信息
      spuImgList:[],
      // 存储销售属性
      spuSaleAttrList:[],
      // 存储平台属性
      attrInfoList:[],
      // 收集sku数据的字段
      skuInfo: {
          // 第一类：父组件传递的
          "category3Id": 0,
          "spuId": 0,
          "tmId": 0,
          // 第二类：通过双向绑定v-model收集的
          "price": '',
          "skuName": "",
          "weight": "",
          "skuDesc": "",
          // 第三类：需要自己写代码收集
          // 平台属性
          "skuAttrValueList": [
            // {
            //   "attrId": 0,
            //   "valueId": 0,
            // }
          ],
          // 默认图片
          "skuDefaultImg": "",
          // 收集图片的字段
          "skuImageList": [
            // {
            //   "id": 0,
            //   "imgName": "string",
            //   "imgUrl": "string",
            //   "isDefault": "string",
            //   "skuId": 0,
            //   "spuImgId": 0
            // }
          ],
          // 销售属性
          "skuSaleAttrValueList": [
            // {
            //   "id": 0,
            //   "saleAttrId": 0,
            //   "saleAttrName": "string",
            //   "saleAttrValueId": 0,
            //   "saleAttrValueName": "string",
            //   "skuId": 0,
            //   "spuId": 0
            // }
          ],
        },
      spu: {},
      // 收集图片的数据字段
      imageList: []
      }
  },
  methods: {
    // 添加SKU属性
    async getDate(category1Id,category2Id,spu) {
      // 收集父组件给予的数据
      this.skuInfo.category3Id = spu.category3Id
      this.skuInfo.spuId = spu.id
      this.skuInfo.tmId = spu.tmId
      this.spu = spu
      // 获取图片信息
      let result = await this.$API.spu.reqSpuImgList(spu.id)
      if(result.code == 200) {
        let list = result.data
        list.forEach(item => {
          // 添加是否默认的字段
          item.isDefault = 0
        })
        this.spuImgList = list
      }
      // 获取销售属性信息
      let result1 = await this.$API.spu.reqSpuSaleAttrList(spu.id)
      if(result1.code == 200) {
        this.spuSaleAttrList = result1.data
      }
      // 获取平台属性数据
      let result2 = await this.$API.spu.reqAttrInfoList(category1Id,category2Id,spu.category3Id)
      if(result2.code == 200) {
        this.attrInfoList = result2.data
      }
    },
    // table表格复选框按钮的事件
    handleSelectionChange(params) {
      // 获取用户选中图片的信息数据，但是需要注意，缺少isDefault字段
      this.imageList = params
    },
    // 排他的操作
    changeDefault(row) {
      this.spuImgList.forEach(item => {
        item.isDefault = 0
      })
      row.isDefault = 1
      this.skuInfo.skuDefaultImg = row.imgUrl
    },
    // 点击取消按钮的回调
    cancel() {
      // 通知父组件切换场景
      this.$emit('changeScenes', 0)
      Object.assign(this._data,this.$options.data())
    },
    // 保存按钮的回调
    async save() {
      // 整理参数--平台属性
      const {attrInfoList,skuInfo,spuSaleAttrList} = this
      // 整理平台属性的数据-----也可以使用attrInfoList.forEach()方法
      skuInfo.skuAttrValueList = attrInfoList.reduce((prev,item) => {
        if(item.attrIdAndValueId) {
          const [attrId,valueId] = item.attrIdAndValueId.split(':')
          prev.push({attrId,valueId})
        }
        return prev
      }, [])
      // 整理销售属性
      skuInfo.skuSaleAttrValueList = spuSaleAttrList.reduce((prev,item) => {
        if(item.attrIdAndValueId) {
          const [saleAttrId,saleAttrValueId] = item.attrIdAndValueId.split(':')
          prev.push({saleAttrId,saleAttrValueId})
        }
        return prev
      },[])
      // 整理图片数据
      skuInfo.skuImageList = this.imageList.map(item => {
        return {
          imgName:item.imgName,
          imgUrl:item.imgUrl,
          isDefault:item.isDefault,
          spuImgId:item.id
        }
      })
      let result = await this.$API.spu.reqAddSku(skuInfo)
      if(result.code == 200) {
        this.$message({type:"success",message: '保存成功'})
        this.$emit('changeScenes', 0)
      }
    }
  }
}
</script>

<style>

</style>